关于数列排列组合的问题!
Judy and John are going out tonight for dinner and a movie.There are 3 restaurants they like and 4 movies they want to see.In how many ways can they choose a restaurant and a movie for this evening?
A.3x4
B.3+4
C.3^4
D.4^3
E.2^3x2^4
Part 8 of 10 -
Question 8 of 10
1.0 Points
How many subsets of the set {A,B,C,D,E,F} contain the letter B but not the letter
A.4
B.8
C.12
D.16
E.32
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Part 9 of 10 -